摘要
目前大部分直接定位方法主要针对窄带信号,为此提出了一种基于分布式无人机(UAV)平台的宽窄带信号直接定位(DPD)方法。首先在频域对多个无人机平台的接收数据进行合成,基于多个频点建立和信源位置直接相关的代价函数;然后,将监测区域进行网格化处理得到目标信源的位置;最后,多无人机移动监测,并不断缩小监测区域,对多次定位结果聚类分析,得到最终定位结果。通过仿真验证,本方法的定位性能明显优于传统的定位方法。同时实测数据的处理结果表明,本文所提方法定位性能优于改进的到达时间差(TDOA)定位方法。
Most of the current direct positioning methods are mainly for narrow-band signals.A wide/narrow band signal Direct Position Determination(DPD)method based on distributed Unmanned Aerial Vehicle(UAV)platform is proposed.Firstly,the received data of multi-UAV platforms are synthesized in frequency domain,and a cost function directly related to the source location is established based on multiple frequency points.Secondly,the monitoring area is gridded to determine the location of the target source.Finally,the multi-UAV movement monitoring is carried out,and the monitoring area is continuously reduced.The final positioning result is obtained by clustering analysis of multiple positioning results.Simulation results show that the localization performance of this method is obviously better than that of traditional localization methods.The processing results of the measured data show that the proposed method has better positioning performance than the improved Time Difference of Arrival(TDOA)positioning method.
作者
赵高峰
陈若迅
李营营
李建峰
ZHAO Gaofeng;CHEN Ruoxun;LI Yingying;LI Jianfeng(College of Electronic Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing Jiangsu 211106,China;State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System,Luoyang Henan 471003,China;State Key Laboratory of Marine Resource Utilization in South China Sea(Hainan University),Haikou Hainan 570228,China)
出处
《太赫兹科学与电子信息学报》
2021年第4期628-634,641,共8页
Journal of Terahertz Science and Electronic Information Technology
基金
国家自然科学基金资助项目(61971217,61601167)
江苏省博士后科研资助计划项目(2020Z013)
中国博士后科学基金资助项目(2020M 681585)
电子信息系统复杂电磁环境效应国家重点实验室(CEMEE 2021Z0101B)
南海海洋资源利用国家重点实验室(海南大学)(MRUKF2021033)
关键词
直接定位
多无人机
聚类分析
辐射源定位
Direct Position Determination
multi-Unmanned Aerial Vehicle
clustering analysis
emitter location
